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Title: Ace1 prevents intracellular copper accumulation by regulating Fet3 expression and thereby restricting Aft1 activity

Abstract

In the yeast Saccharomyces cerevisiae Aft1, the low iron‐sensing transcription factor is known to regulate the expression of the FET 3 gene. However, we found that a strain‐lacking FET 3 is more sensitive to copper excess than a strain‐lacking AFT 1 , and accordingly, FET 3 expression is not fully compromised in the latter. These findings suggest that, under such conditions, another regulator comes into play and controls FET 3 expression. In this work, we identify Ace1, the regulator of copper detoxification genes, as a regulator of FET 3 . We suggest that the activation of FET 3 by Ace1 prevents the hyper activation of Aft1, possibly by assuring the adequate functioning of mitochondrial iron–sulfur cluster biogenesis. While reinforcing the link between iron and copper homeostasis, this work unveils a novel protection mechanism against copper toxicity mediated by Ace1, which relies in the activation of FET 3 and results in the restriction of Aft1 activity as a means to prevent excessive copper accumulation.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Instituto de Tecnologia Química e Biológica António Xavier Universidade Nova de Lisboa Oeiras Portugal
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1433430
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Federation of European Biochemical Societies (FEBS) Journal
Additional Journal Information:
Journal Name: Federation of European Biochemical Societies (FEBS) Journal Journal Volume: 285 Journal Issue: 10; Journal ID: ISSN 1742-464X
Publisher:
Wiley-Blackwell
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Gaspar‐Cordeiro, Ana, Marques Caetano, Soraia, Amaral, Catarina, Rodrigues‐Pousada, Claudina, and Pimentel, Catarina. Ace1 prevents intracellular copper accumulation by regulating Fet3 expression and thereby restricting Aft1 activity. United Kingdom: N. p., 2018. Web. doi:10.1111/febs.14450.
Gaspar‐Cordeiro, Ana, Marques Caetano, Soraia, Amaral, Catarina, Rodrigues‐Pousada, Claudina, & Pimentel, Catarina. Ace1 prevents intracellular copper accumulation by regulating Fet3 expression and thereby restricting Aft1 activity. United Kingdom. https://doi.org/10.1111/febs.14450
Gaspar‐Cordeiro, Ana, Marques Caetano, Soraia, Amaral, Catarina, Rodrigues‐Pousada, Claudina, and Pimentel, Catarina. Tue . "Ace1 prevents intracellular copper accumulation by regulating Fet3 expression and thereby restricting Aft1 activity". United Kingdom. https://doi.org/10.1111/febs.14450.
@article{osti_1433430,
title = {Ace1 prevents intracellular copper accumulation by regulating Fet3 expression and thereby restricting Aft1 activity},
author = {Gaspar‐Cordeiro, Ana and Marques Caetano, Soraia and Amaral, Catarina and Rodrigues‐Pousada, Claudina and Pimentel, Catarina},
abstractNote = {In the yeast Saccharomyces cerevisiae Aft1, the low iron‐sensing transcription factor is known to regulate the expression of the FET 3 gene. However, we found that a strain‐lacking FET 3 is more sensitive to copper excess than a strain‐lacking AFT 1 , and accordingly, FET 3 expression is not fully compromised in the latter. These findings suggest that, under such conditions, another regulator comes into play and controls FET 3 expression. In this work, we identify Ace1, the regulator of copper detoxification genes, as a regulator of FET 3 . We suggest that the activation of FET 3 by Ace1 prevents the hyper activation of Aft1, possibly by assuring the adequate functioning of mitochondrial iron–sulfur cluster biogenesis. While reinforcing the link between iron and copper homeostasis, this work unveils a novel protection mechanism against copper toxicity mediated by Ace1, which relies in the activation of FET 3 and results in the restriction of Aft1 activity as a means to prevent excessive copper accumulation.},
doi = {10.1111/febs.14450},
journal = {Federation of European Biochemical Societies (FEBS) Journal},
number = 10,
volume = 285,
place = {United Kingdom},
year = {Tue Apr 17 00:00:00 EDT 2018},
month = {Tue Apr 17 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1111/febs.14450

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Cited by: 2 works
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